Pictures of a dog faithfully watching over his canine companion who had been killed by a car in China have become a hit on the internet.

The sandy-coloured 'Good Samaritan' pooch stayed by his friend's side, despite his pal's body lying in the middle of a busy road.

And he refused to move for a whole night as temperatures plummeted to low as -13C.

Some people who live and work nearby saw the pair and decided to put a stool next to the animals to alert drivers and avoid a second dog death after the first accident on December 22.

Passers-by took pictures and put them online, and the images have been re-posted many times.

One woman called Ma Hongyan said: "It is our stool. A kind-hearted woman put it next to the dogs to protect them from being hit again by another car."

Another onlooker in the city of Yinchuan, in the region of Ningxia Hui, said: "The drivers must be careful and not hit them.

"The dog has been here for his friend all night."

Eventually, the deceased white dog was picked up by a restaurant owner and taken to the side of the road.

But even then, the sandy dog refused to let go. Trotting with his tail held high, he stuck close to his pal.

The unnamed man buried the white dog under a tree in a local park.

The fate of the Samaritan dog is not known.